Portable display device



FIG. 1 is a front, right, top perspective view of the portable display device showing our new design in a folded state;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front, right, top perspective view thereof in an unfolded state;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top plan view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the portable display device that form no part of the claimed design. 

CLAIM The ornamental design for a portable display device, as shown and described. 